Below are the error codes that can be seen within your proxy logs. If you have issues with your proxies and see any of the below error codes, please contact the technical support team and give them the error code and complete log message to assist you further.
0 - Operation successfully completed (connection was closed by one of peers)
1-9 - AUTHENTICATION ERRORS
1 - Access denied by ACL (deny)
2 - Redirection (should not appear)
3 - No ACL found, denied by default
4 - auth=strong and no username in request
5 - auth=strong and no matching username in configuration
6 - User found, wrong password (cleartext)
7 - User found, wrong password (crypt)
8 - User found, wrong password (NT)
9 - Redirection data not found (should not appear)
10 - Traffic limit exceeded
11-19 - CONNECTION ERRORS
11 - failed to create socket()
12 - failed to bind()
13 - failed to connect()
14 - failed to getpeername()
20-29 - COMMON ERRORS
21 - memory allocation failed
30-39 - CONNECT PROXY REDIRECTION ERRORS
31 - failed to request HTTP CONNECT proxy
32 - CONNECT proxy connection timed out or wrong reply
33 - CONNECT proxy fails to establish connection
34 - CONNECT proxy timed out or closed connection
40-49 - SOCKS4 PROXY REDIRECTION ERRORS
50-69 - SOCKS5 PROXY REDIRECTION ERRORS
70-79 - PARENT PROXY CONNECTION ERRORS (identical to 1x)
90-99 - established connection errors